US 9,450,667 B2Granted

Method for device to device communication and base station and user equipment using the same

AssigneeIndustrial Technology Research Institute

InventorsTing-Yu Lin, Tzu-Ming Lin

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Abstract

A method for device to device communication, a control node using the same, and a user equipment using the same has been proposed. For the proposed method, a control node first establishes with a caller device a connection during which an ID of the callee and an establishment cause indicating caller is transmitted to the control node. A control node then informs the call to a callee device by establishing with the callee device a connection during which a D2D ID of the callee and an establishment cause indicating callee is transmitted to the control node. When the control node finds a caller device linked with a caller establishment cause and a D2D ID of the callee, the control node automatically trigger D2D communication between the caller device and the callee device.

Claims44

Dependent claims

A control node comprising a transmitter and a receiver for respectively transmitting and receiving wireless data, a storage medium for storing information of a first device and a second device, and a processing circuit coupled to the transmitter, the receiver, and the storage medium and is configured for executing:

establishing with the first device a first radio resource control (RRC) connection, and receiving from the first device a caller indicator and a D2D identification (ID) of the second device during establishing the first RRC connection, wherein the D2D ID of the second device is embedded in a first RRC message after the first device completes setup of the first RRC connection;
establishing with the second device a second RRC connection, and receiving from the second device a callee indicator and the D2D ID of the second device during establishing the second RRC connection, wherein the D2D ID of the second device is embedded in a second RRC message after the second device completes setup of the second RRC connection;
requesting service from a network;
searching for the first device with the caller indicator and the D2D ID of the second device;
and
arranging a device to device (D2D) communication between the first device and the second device based on at least the caller indicator and the callee indicator when a first condition has been satisfied.

3 more elements

A method for device to device (D2D) communication, adapted for a control node in a network to arrange for D2D communication between a first device and a second device, and the method comprising:

establishing with a first device a first radio resource control (RRC) connection, and receiving from the first device a caller indicator and an D2D identification (ID) of the second device during establishing the first RRC connection, wherein the D2D ID of the second device is embedded in a first RRC message after the first device completes setup of the first RRC connection;
establishing with the second device a second RRC connection, and receiving from the second device a callee indicator and the D2D ID of the second device during establishing the second RRC connection, wherein the D2D ID of the second device is embedded in a second RRC message after the second device completes setup of the second RRC connection;
finding a first device associated with a caller indicator and the D2D ID of the second device;
and
if the first device is found, arranging the D2D communication between the first device and the second device.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/831,984Filed 15 Mar 2013 · us provisional application
Priority: 19 Mar 2012
Published: US 2013/0242866 A119 Sep 2013
Granted: 20 Sep 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04B 7/26
For communication between two or more posts: at least one of which is mobile
H04W 36/033
Reselecting a link using a direct mode connection: in pre-organised networks
H04W 76/14
Connection setup: direct-mode setup
H04W 76/10
Connection management: connection setup